Backend Software Engineer – Golang, Java

1GLOBAL

Backend Software Engineer developing and maintaining Network API and xSIM Management System. Join a leading global mobile communications provider in São Paulo, Brazil.

Posted 7/31/2026full-timeSão Paulo • 🇧🇷 BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in backend development with a strong focus on Go (Golang) and Java, alongside a solid understanding of concurrency models and RESTful API design. Proven ability to build scalable microservices architectures and maintain high standards of code quality through testing and documentation.

Highest-signal resume keywords

Backend DevelopmentGo (Golang)RESTful API DesignMicroservices ArchitectureDatabase Management

ATS Keywords

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Hard Skills

Concurrency ModelsAsynchronous WorkflowsData ModellingQuery OptimisationUnit TestingIntegration TestingPerformance TuningNetworking ProtocolsDistributed SystemsSoftware Engineering Best Practices

Soft Skills

Effective CommunicationTeam CollaborationContinuous Improvement Mindset

Tools & Technologies

DockerCI/CD PipelinesInfrastructure as CodeGit Workflows

Industry Keywords

Technical DocumentationCode ReviewsAgile MethodologiesObservabilityFault-Tolerant Architectures

Tech Stack

Tools & technologies

Distributed SystemsDockerDynamoDBGoGRPCJavaMicroservicesMongoDBPostgresRedis

About the role

Key responsibilities & impact

Provide accurate effort estimates to support roadmap planning and effective expectation management.
Design and implement resilient, scalable, secure, and fault-tolerant architectures to ensure system reliability and performance.
Develop new features and support existing systems across the Network API, xSIM Management System, and Recording Platforms.
Contribute with small, incremental enhancements that seamlessly integrate into the established codebases.
Maintain and update existing solutions to keep them modern, efficient, and reliable.
Collaborate with team members to ensure smooth development processes and shared understanding.
Write and maintain comprehensive tests to ensure fast regression and reliable validation of new features.
Implement procedures and metrics to enable effective monitoring and observability of platform contributions.
Participate in code reviews to promote high standards of code quality, readability, and maintainability.
Take ownership of the quality and outcomes of your work, ensuring fully functional end-to-end flows.
Create and maintain accurate, up-to-date technical documentation.
Actively contribute to team discussions, with a mindset for continuous improvement and openness to new ideas or technologies.

Requirements

What you’ll need

3+ years of professional experience in backend development, preferably with Go (Golang). Strong Java experience with willing to learn Go is also welcome.
Strong understanding of concurrency models, with practical experience in implementing asynchronous workflows, inter-process communication, and synchronisation techniques.
Skilled in designing, building, and consuming RESTful APIs, following best practices for API design and performance optimisation.
Proven experience working with databases, both relational (e.g., PostgreSQL) and non-relational (e.g., Redis, MongoDB, DynamoDB), including data modelling, query optimisation, and performance tuning.
Experienced in writing unit tests, integration tests, and benchmarks, with a test-driven development mindset.
Comfortable with networking protocols and distributed communication patterns (e.g., gRPC, WebSockets, TCP/UDP).
Experienced in building scalable microservices architectures and distributed systems.
Knowledgeable in applying software engineering best practices and design patterns for maintainable, testable code.
Skilled in using DevOps tools and practices, including Docker, CI/CD pipelines, and Infrastructure as Code.
Familiar with Git workflows and collaborative development processes such as pull requests, code reviews, and agile methodologies.
Demonstrated accountability for technical outcomes and ownership of end-to-end feature delivery.
Effective communicator in English, both written and verbal, suitable for a remote and largely asynchronous work environment.

Benefits

Comp & perks

CLT contract — enjoy job stability and reliable benefits that value your work
Quarterly performance bonuses to reward your hard work and achievements
Meal allowance paid into Caju card — R$100 per working day
Health insurance with SulAmérica — 50% covered by the company
Extended parental leave — 180 days of maternity leave and 20 days of paternity leave.
Daycare allowance provided to mothers with children under 3 years old — R$500 per month per child